# Technical Specifications The following table lists the key hardware and electrical specifications of the **SMLIGHT SLWF-09** LED controller and its supported add-on modules. --- ## **7.1 Main Board**
ParameterSpecification
**MCU**ESP32-D0WD-V3, dual-core 240 MHz
**Flash Memory**16 MB
**Default Firmware**WLED (latest stable release)
**Power Input Options**USB-C (5V or 12V), DC plug-in terminal (5V–12V DC), VIN fast-clips terminal (5V–12V DC), PoE via add-on (5V output)
**LED Output Channels**2 channels (expandable up to 4 via DIY GPIO)
**Supported LED Types**WS2812B, SK6812, APA102, and other 3-wire or 4-wire addressable LEDs
**Max LED Voltage**12V
**Max LED Current**With an **external PSU** (current passes through the controller terminals) - **up to 20A**. With an **external PSU** directly connected to the LED strip - **unlimited**. Using **USB-C** - **up to 5A**. Using **DC5.5** - **up to 3A**. Using **POE Addon - up to** **800mA**.
**Data Level Shifting**On-board 3.3V → 5V
**Connectivity**Wi-Fi 2.4 GHz (IEEE 802.11 b/g/n), Ethernet via add-on
**USB Interface**USB-C with UART auto-programming
**Buttons**2 buttons, fully configurable
**Operating Temperature**-10 °C to +60 °C
**Dimensions**57 × 30 × 23 mm
--- ## **7.2 Ethernet Add-on (Optional)**
ParameterSpecification
**Ethernet PHY**LAN8720
**Speed**10/100 Mbps full-duplex
**Connector**RJ45 with integrated magnetics and status LEDs
**Power Requirement**Powered by main board
**Dimensions**60 × 18 × 15 mm
--- ## **7.3 PoE Add-on (Optional)**
ParameterSpecification
**PoE Standard**IEEE 802.3af Class 0
**Input Voltage**37–48 V DC via Ethernet cable
**Output Voltage**5 V DC regulated
**Max Output Power****Recommended long-term power: 4W** Maximum **peak** power: up to 12.95 W
**Dimensions**31.5 × 28.7 × 16 mm
--- ## **7.4 Microphone Add-on (Optional)**
ParameterSpecification
**Microphone Type**ICS-43432 digital MEMS
**Interface**I²S
**Frequency Response**60 Hz – 15 kHz
**Power Requirement**3.3 V (supplied from main board)
**Dimensions**15 × 12 mm
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